A.1s12s12p1B.1s22s22p1C.1s22s22p3D.1s22s32p2
A.原子內(nèi)層電子能級(jí)間躍遷B.原子的價(jià)電子能級(jí)間的躍遷C.分子振動(dòng)能級(jí)間的躍遷D.分子轉(zhuǎn)動(dòng)能級(jí)間的躍遷